lang/cling: Fix build
- While I'm here:
- Use = instead of += for CMAKE_ARGS, PLIST_SUB and SUB_LIST
- Remove CMAKE_BUILD_TYPE
- Clean up Makefile
- Cosmetic change
ld: error: version script assignment of 'LLVM_5.0' to symbol 'LLVMCreateDisasm' failed: symbol not defined
ld: error: version script assignment of 'LLVM_5.0' to symbol 'LLVMCreateDisasmCPU' failed: symbol not defined
ld: error: version script assignment of 'LLVM_5.0' to symbol 'LLVMDisasmDispose' failed: symbol not defined
ld: error: version script assignment of 'LLVM_5.0' to symbol 'LLVMDisasmInstruction' failed: symbol not defined
ld: error: version script assignment of 'LLVM_5.0' to symbol 'LLVMSetDisasmOptions' failed: symbol not defined
c++: error: linker command failed with exit code 1 (use -v to see invocation)